October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

EGR Valve

Start engine. Disconnect vacuum hose from EGR valve. Connect a vacuum pump to EGR valve.
Apply 6 in. Hg to EGR valve. Ensure vacuum holds steady. Engine should die. If vacuum does not hold, replace EGR valve. If engine does not die, check EGR valve and ports for blockage.